Reloading in air slows down speed

[Wolf]

When reloading in the air, you speed slows down since you can't reload and sprint at the same time. This is kind of an inconvenience, but not too important.

[Lunatic]

If you use the button sprint instead of double tapping, letting go of the sprint button also makes you lose speed. This is, however, by design, as far as I can tell.

[Zyfex]

if the weapon has a quick reload (pistol, carbine, etc.), you can sprint, jump, then begin reloading to retain your speed. you might slow to a stop/walk once you hit the ground but that's as good as it gets

[Gurt]

I noticed some bugs related to sprinting and reloading that's fixed after Pre-Alpha 1.8.8. So what you noticed is most likely fixed.